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| From about 1990 [wiki:WikiPedia/Kenneth_E._Iverson Ken Iverson] worked with [wiki:WikiPedia/Roger_Hui Roger Hui] and others on a successor to APL, abandoning the distinctive SpecialCharacters and naming all the primitives from the ASCII character set. This became known as the [wiki:WikiPedia/J_programming_language J programming language]. It is used by an active community of largely solo programmers. | From about 1990 wiki:WikiPedia/Kenneth_E._Iverson worked with wiki:WikiPedia/Roger_Hui and others on a successor to APL, abandoning the distinctive SpecialCharacters and naming all the primitives from the ASCII character set. This became known as the wiki:WikiPedia/J_programming_language. It is used by an active community of largely solo programmers. |
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| In the 1990s Arthur Whitney wrote the [wiki:WikiPedia/K_programming_language K programming language], a blend of APL and Lisp, as a proprietary successor to A+. Like J, it uses only ASCII characters. K is the basis of the KDB inverted-column database, and of the less-terse Q programming language. | In the 1990s Arthur Whitney wrote the wiki:WikiPedia/K_programming_language, a blend of APL and Lisp, as a proprietary successor to A+. Like J, it uses only ASCII characters. K is the basis of the KDB inverted-column database, and of the less-terse Q programming language. |
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| Other languages have made heavy borrowings from APL: MATLAB, Mathematica, R and S. | Other languages have made heavy borrowings from APL: [http://www.mathworks.com/ MATLAB], [http://www.wolfram.com/ Mathematica], the wiki:WikiPedia/R_programming_language and the wiki:WikiPedia/S_programming_language. |
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| APL has exercised a strong influence on languages designed for [wiki:WikiPedia/Functional_programming functional programming]. | APL has exercised a strong influence on languages designed for wiki:WikiPedia/functional_programming. |
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| * [wiki:WikiPedia/APL_programming_language Wikipedia article on APL] | * wiki:WikiPedia/APL_programming_language |
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APLs and related languages
APLs
The original APL\1130 spawned many children:
- APL\360
- APL*PLUS
[http://www.apl2000.com/ APL2000]
- APL68000
- APLSV
[http://www.dyalog.com Dyalog APL]
- [attachment:WhichApl/iapl111.zip I-APL]
[http://www.soliton.com/services_sharp.html SHARP APL], (SAX on Unix)
- VSAPL
While implementing sometimes quite different features, these all shared the distinctive APL character set. A recent addition to this group is Richard Smith's [http://www.vector.org.uk/archive/v212/rowan.htm Rowan], an APL interpreter constructed from .Net assemblies.
Of these, APL2, SAX and VSAPL are in use primarily to maintain legacy systems. APL2000, APLX and Dyalog APL are in use for new systems development.
A+
In the 1980s, wiki:WikiPedia/Arthur_Whitney designed an all-ASCII subset of APL for Morgan Stanley, an investment bank. This language [http://www.aplusdev.org A+], became the principal platform for trading-room applications for about 15 years, and has since been published by Morgan Stanley.
J
From about 1990 wiki:WikiPedia/Kenneth_E._Iverson worked with wiki:WikiPedia/Roger_Hui and others on a successor to APL, abandoning the distinctive SpecialCharacters and naming all the primitives from the ASCII character set. This became known as the wiki:WikiPedia/J_programming_language. It is used by an active community of largely solo programmers.
K
In the 1990s Arthur Whitney wrote the wiki:WikiPedia/K_programming_language, a blend of APL and Lisp, as a proprietary successor to A+. Like J, it uses only ASCII characters. K is the basis of the KDB inverted-column database, and of the less-terse Q programming language.
Other languages
Other languages have made heavy borrowings from APL: [http://www.mathworks.com/ MATLAB], [http://www.wolfram.com/ Mathematica], the wiki:WikiPedia/R_programming_language and the wiki:WikiPedia/S_programming_language.
APL has exercised a strong influence on languages designed for wiki:WikiPedia/functional_programming.
Other sources
- wiki:WikiPedia/APL_programming_language
[http://www.vector.org.uk/archive/v203/vonthun203.htm Interview with Manfred von Thun], designer of Joy, in Vector
[http://www.math.chalmers.se/~rjmh/Papers/whyfp.html Why functional programming matters] John Hughes, 1984